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강미영,류수노,Catherine W. Rico,강미영 한국응용생명화학회 2014 Applied Biological Chemistry (Appl Biol Chem) Vol.57 No.5
Effects of newly-developed pigmented rice Superjami,in comparison with those of its parental cultivars (Heugjinjubyeoand Suweon 425) and ordinary brown rice, on the lipid andglucose metabolisms and antioxidative defense status in high fatfedmice were investigated. The animals were randomly dividedand given experimental diets for eight weeks: normal control, highfat, and high fat supplemented with ordinary brown, Heugjinjubyeo,Suweon 425 or Superjami rice powder. Their body weight, plasmalipid profile, blood glucose level, and lipid peroxidation weremeasured. The enzymes and hormones involved in the lipid andglucose metabolisms were also analyzed. High fat feedingsignificantly increased the body weight, total cholesterol, triglyceride,blood glucose, and lipid peroxidation in mice. On the other hand,diet supplementation of the rice samples, particularly Superjami,markedly reduced the body weight gain, improved the lipid andglucose profiles, and suppressed oxidative stress through regulationof hepatic lipogenesis and adipokine production, inhibition ofglucose-regulating enzymes, and enhancement of antioxidant enzymeactivities. Superjami has greater hypolipidemic, hypoglycemic,and antioxidant status-improving effects than its parental cultivars. This study provides the first evidence of the physiological effectof Superjami, which may be useful in the prevention andmanagement of high fat diet-induced hyperlipidemia, hyperglycemia,and oxidative stress.
강미영,이상철,문정은 한국작물학회 2013 Journal of crop science and biotechnology Vol.16 No.2
The effects of the functional rice cultivars giant embryo and Aranghyangchal on the body weight and lipid metabolism in male C57BL/6N mice under high fat diet conditions were investigated. The animals were randomly placed into four dietary groups: normal control (NC group), high fat (HF group), and high fat supplemented with giant embryo (HF-GE group) or Aranghyangchal (HFAR group). After 8weeks, a marked increase in the body weight and plasma triglyceride and total cholesterol concentrations were found in the HF mice relative to the control group. However, the addition of the functional rice samples in the high fat diet reduced the body weight gain and significantly decreased the lipid levels through inhibition of lipogenesis and regulation of adipokine production. The results demonstrate that the functional rice grains giant embryo and Aranghyangchal may both be useful as biomaterials in the development of functional food with therapeutic potential against high fat diet-induced hyperlipidemia
Varietal Difference in Physicochemical Properties of Pigmented Rice Varieties
강미영,Catherine W. Rico,이상철 한국작물학회 2011 Journal of crop science and biotechnology Vol.14 No.2
The physicochemical properties of pigmented (Midorimochi, Jeokjinjubyeo, and Heukmichalbyeo) and non-pigmented (Hwayoungbyeo) rice varieties were investigated. Starch from non-pigmented rice consisted mainly of large polyhedral granules that were more loosely packed than those of the non-pigmented sample. Pigmented rice showed higher linoleic acid content (36 - 40%)and hydrolysis rate (63 - 79%) but lower oleic acid content (35 - 39%), blue value (0.05 - 0.17), and viscosity values than the nonpigmented one. Significantly higher mineral content, blue value, and pasting and viscosity values were observed in the Jeokjinjubyeo sample compared to those of the other pigmented rice samples. The Midorimochi variety, on the other hand, exhibited the highest total amino acid (816.82 ng mg-1) and sugar (0.15 - 3.35 μg g-1) contents and the lowest pasting and viscosity values. No substantial difference in the X-ray diffraction pattern was observed among the samples. Results of this study could serve as baseline information for the quality evaluation of three pigmented rice cultivars and provide a better understanding of their potential uses and food industry applications.